Since Keanu Reeves was cloying my brain after I read the prompt I looked up the word “matrix” in the dictionary. Turns out it comes from Latin (surprise!) and it means either “uterus” or “dam” (as in a mother in the animal world). So: mama spidermonkey to the rescue. Very protective of her baby, including the safety tail wrapped around the rope.
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pictures imperfect blog 
I never would have guessed that meaning. I always think of it in a mathematics context.
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Me too, to be honest. But when I had no photo fitting that meaning I did my old go-to: English-German dictionary, or synonyms and the like.
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